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12周胎盘距离宫颈口多少正常
更新时间: 2020-11-04 00:00:00  

一般情况下,正常的胎盘下缘距宫颈内口长度应超过7厘米,如果小于七厘米就很有可能导致胎盘低置。

胎盘(placenta)是后兽类和真兽类哺乳动物妊娠期间由胚胎的胚膜和母体子宫内膜联合长成的母子间交换物质的过渡性器官。

关键词: 胎盘 距离 宫颈 多少 正常

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